50000BTU_barbecue writes "Usually sci-fi provides adventure with happy endings for everyone. But what story have you read that resonates years later because of some insight about human nature or society that's basically cynical or pessimistic? For me it's Fred Pohl's Jem, with its sharply divided resource-constrained future world driven by politics, and its conclusion that humans are just too destructive to handle contacting alien life, especially if humans have the technological upper hand. I'm wondering what other stories have stuck in people's minds. It can be a short story, a novel or an entire series of books."